package com.huike.web.controller.common;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.compress.utils.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.MediaType;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import com.huike.clues.service.ISysFileService;
import com.huike.common.config.HuiKeConfig;
import com.huike.common.constant.Constants;
import com.huike.common.core.controller.BaseController;
import com.huike.common.core.domain.AjaxResult;
import com.huike.common.utils.StringUtils;
import com.huike.common.utils.file.FileUtils;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

/**
 * 通用请求处理
 */
@RestController
public class CommonController extends BaseController {
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ISysFileService fileService;
    @Value("${reggie.path}")
    private String basePath;

    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    public AjaxResult uploadFile(MultipartFile file) {
        try {
            // 上传文件路径
            return fileService.upload(file);
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    @GetMapping("/common/download")
    public void download(String fileName, HttpServletResponse response) throws IOException {
//        File file = new ClassPathResource(fileName).getFile();
//        FileInputStream fileInputStream=new FileInputStream(new File(basePath+fileName));
//        ServletOutputStream outputStream = response.getOutputStream();
//        response.setHeader("Content-Disposition", "attachment;filename="
//                + fileName + ".xlsx");
//        IOUtils.copy(fileInputStream,outputStream);
//        fileInputStream.close();
//        outputStream.close();
//
//    }

        try {
            //输入流，通过输入流读取文件内容
            FileInputStream fileInputStream = new FileInputStream(new File(basePath + fileName));

            //输出流，通过输出流将文件写回浏览器
            ServletOutputStream outputStream = response.getOutputStream();

            response.setContentType("application/vnd.ms-excel");

            int len = 0;
            byte[] bytes = new byte[1024];
            while ((len = fileInputStream.read(bytes)) != -1) {
                outputStream.write(bytes, 0, len);
                outputStream.flush();
            }

            //关闭资源
            outputStream.close();
            fileInputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}


